It takes a certain mind to complete a puzzle. Some minds like straightforward situations, and easy answers. It is not a fault, but a fact that the human brain does not like to work too hard, and in the name of efficiency it likes to create 'shortcuts '. Often, these can appear in the way that a mind can make a judgement too fast; it falls prey to stereotypes, it likes to be able to judge quickly whether or not the person from the enemy tribe can be trusted.

On the other hand, some minds like to be challenged. There are some that like to push the boundaries of human knowledge, driving the rest forward as one species: what tool can do the job? If we developed a system of agriculture, could our society improve? If we created laws and rules, would that keep us safe?